diff --git a/deploy/crds/crd-qdrantcollection.yaml b/deploy/crds/crd-qdrantcollection.yaml
index fdc5bed..98537f6 100644
--- a/deploy/crds/crd-qdrantcollection.yaml
+++ b/deploy/crds/crd-qdrantcollection.yaml
@@ -57,4 +57,8 @@ spec:
               onDisk:
                 type: boolean
                 default: true
+              config:
+                description: "Custom Qdrant collection configuration"
+                type: object
+                x-kubernetes-preserve-unknown-fields: true
 
diff --git a/deploy/operator.yaml b/deploy/operator.yaml
index 87e666a..2dd3ec4 100644
--- a/deploy/operator.yaml
+++ b/deploy/operator.yaml
@@ -75,9 +75,10 @@ spec:
       labels: *labels
     spec:
       serviceAccountName: qdrant-operator-sa
+      terminationGracePeriodSeconds: 5
       containers:
       - name: operator
-        image: docker.io/dganochenko/qdrant-operator:0.1.4
+        image: docker.io/dganochenko/qdrant-operator:0.1.5
         imagePullPolicy: Always
         # debug
         # command: ["/bin/sh"]
diff --git a/docs/qdrantcollections-api.md b/docs/qdrantcollections-api.md
index 558737d..7934b9e 100644
--- a/docs/qdrantcollections-api.md
+++ b/docs/qdrantcollections-api.md
@@ -29,4 +29,6 @@ spec:
 
 - **replicationFactor** (integer, optional): Number of replicas for each shard in the collection.
 
+- **config** (object, optional): Additional configuration for the Qdrant collection, including [indexing](https://qdrant.tech/documentation/concepts/indexing/#vector-index), [quantization](https://qdrant.tech/documentation/guides/quantization/) and [optimizer](https://qdrant.tech/documentation/concepts/optimizer/) parameters.
+
 Feel free to customize the values based on your specific requirements when creating or updating the QdrantCollection custom resource in your Kubernetes cluster.
diff --git a/examples/qdrant-collection-complete.yaml b/examples/qdrant-collection-complete.yaml
index eb815fa..564ade9 100644
--- a/examples/qdrant-collection-complete.yaml
+++ b/examples/qdrant-collection-complete.yaml
@@ -5,7 +5,19 @@ metadata:
 spec:
   cluster: my-cluster
   vectorSize: 10
-  onDisk: true
+  onDisk: false
   shardNumber: 6
   replicationFactor: 2
-
+  config:
+    hnsw_config:
+      m: 16
+      ef_construct: 100
+      full_scan_threshold: 10000
+    optimizers_config:
+      deleted_threshold: 0.2
+      vacuum_min_vector_number: 1000
+    quantization_config:
+      scalar:
+        type: int8
+        quantile: 0.5
+        always_ram: true
diff --git a/examples/qdrant-collection-replication.yaml b/examples/qdrant-collection-replication.yaml
new file mode 100644
index 0000000..eb815fa
--- /dev/null
+++ b/examples/qdrant-collection-replication.yaml
@@ -0,0 +1,11 @@
+apiVersion: qdrant.operator/v1alpha1
+kind: QdrantCollection
+metadata:
+  name: my-collection
+spec:
+  cluster: my-cluster
+  vectorSize: 10
+  onDisk: true
+  shardNumber: 6
+  replicationFactor: 2
+
diff --git a/src/collection-ops.js b/src/collection-ops.js
index 9641713..f36af9e 100644
--- a/src/collection-ops.js
+++ b/src/collection-ops.js
@@ -40,7 +40,7 @@ export const createCollection = async (apiObj, k8sCustomApi, k8sCoreApi) => {
     k8sCustomApi,
     k8sCoreApi
   );
-  const body = {
+  var body = {
     vectors: {
       size: apiObj.spec.vectorSize,
       distance: 'Cosine',
@@ -49,6 +49,9 @@ export const createCollection = async (apiObj, k8sCustomApi, k8sCoreApi) => {
     shard_number: apiObj.spec.shardNumber,
     replication_factor: apiObj.spec.replicationFactor
   };
+  if (typeof apiObj.spec.config !== 'undefined') {
+    body = { ...body, ...apiObj.spec.config };
+  }
   try {
     log(
       `Trying to create a Collection "${name}" in the Cluster "${apiObj.spec.cluster}"...`
@@ -72,7 +75,7 @@ export const updateCollection = async (apiObj, k8sCustomApi, k8sCoreApi) => {
     k8sCustomApi,
     k8sCoreApi
   );
-  const body = {
+  var body = {
     vectors: {
       '': {
         size: apiObj.spec.vectorSize,
@@ -83,6 +86,9 @@ export const updateCollection = async (apiObj, k8sCustomApi, k8sCoreApi) => {
     shard_number: apiObj.spec.shardNumber,
     replication_factor: apiObj.spec.replicationFactor
   };
+  if (typeof apiObj.spec.config !== 'undefined') {
+    body = { ...body, ...apiObj.spec.config };
+  }
   try {
     log(
       `Trying to update a Collection "${name}" in the Cluster "${apiObj.spec.cluster}"...`
diff --git a/src/package-lock.json b/src/package-lock.json
index e33f19d..82e7c52 100644
--- a/src/package-lock.json
+++ b/src/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "qdrant-operator",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "qdrant-operator",
-      "version": "0.1.4",
+      "version": "0.1.5",
       "license": "MIT",
       "dependencies": {
         "@kubernetes/client-node": "^0.20.0",
diff --git a/src/package.json b/src/package.json
index c902ea7..c147198 100644
--- a/src/package.json
+++ b/src/package.json
@@ -1,6 +1,6 @@
 {
   "name": "qdrant-operator",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "Kubernetes operator for Qdrant",
   "main": "index.js",
   "type": "module",
diff --git a/src/tools/cert-generate.sh b/src/tools/cert-generate.sh
index d890b9e..6772b15 100755
--- a/src/tools/cert-generate.sh
+++ b/src/tools/cert-generate.sh
@@ -81,5 +81,5 @@ openssl req -nodes -sha256 -new -key key.pem \
   -extensions v3_req -extfile csr.conf \
   -CAcreateserial -out cert.pem 2>/dev/null
 
-echo "Certificates for \"${NAME}\" are ready!"
+echo -n "Certificates for \"${NAME}\" are ready!"